Spicer NEW REDESIGNED 40K TANDEM CARRIERS User Manual

Bulletin: ABIB-0801R1

Date: October 22, 2010

Bulletin Type: Service

Topic: NEW REDESIGNED 40K TANDEM CARRIERS

____________________________________________________________

Affected Models:

All D344, 404, 405, DST40, 41, DSP40, 41, DSH40, DSH44 (includes Diff Lock and Pump option models)

Issue Description:

Dana has engineered in a significant product upgrade to the current 40K tandem axles. At the core of
these product enhancements is the incorporation of Dana’s patented and proven OnDemand™ lube
pump. This innovative lubrication system operates primarily during spinout situations. The remaining
99+% of the time, the pump is idle and ready to be activated instantaneously, in forward or reverse.
When compared to competitive axles that continuously operate a lube pump, this efficiency upgrade
saves up to 2HP and also decreases oil sump temperature by as much as 20°F. The wasted HP incurred
by the other axles relates directly to reduced fuel economy, higher temperatures in the lube sump, and
reduced lubricant life. The new design carriers have been optimally designed such that there is now a
12lbs weight savings on pump carriers and 5lbs for the non-pump models. This same system is currently
used in the D170 and D190 family of heavy duty tandems.

SERVICE PARTS IMPACT: Production of the new design units in North America begins June 16, 2008.
These design upgrades will impact customers who stock parts or service carriers for the models listed
above. Service Carriers are completely interchangeable as units.
are not interchangeable! It is important for customers to beware of the part number changes and in
time begin making stocking adjustments accordingly.

The material contained in this bulletin is product improvement information. Dana Corporation is not

Dana OnDemand™ lube
pump now available in 40K
tandem carriers

committed to, or liable for, canvassing existing products.

New Input Shaft
for Lube pump

Lube pump located inside
new output shaft side gear

Individual internal parts and kits

Page 1 of 6

INFORMATION BULLETIN - ABIB-0801R1 – NEW REDESIGNED 40K TANDEM CARRIERS

Original

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esign

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ervice

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arriers are c

ompletely

New Service Part Numbers:

Outlined below are the newly released service parts. Dealers should begin to maintain an initial level of these
parts going forward as the individual parts between the old and new are not compatible. All parts for the older
design carriers will continue to be offered thru service.

• BASIC OVERHAUL KITS – Dana has reduced the complexity of the repaired kits offered on the

w carriers by only releasing Basic Overhaul Kits. Two new kits have been released that come

ne
complete with all the necessary bearings, shims, washers and RTV sealant required when doing an
overhaul.

NEW OVERHAUL KIT PART NUMBERS:

504030 – Basic Overhaul Kit – D40K Standard Models – AFTER 6.16.08

504031 – Basic Overhaul Kit – D40K Diff-Lock Models – AFTER 6.16.08

• INPUT SHAFT KITS – The new design carriers now utilize a “Pump” version and a “Non Pump”

version input shaft. The part number of the shaft is stamped on the part for easy identification. Each
shaft is sold thru service in a kit form that includes the nut, thrust washer and torque information
sheet.

NEW INPUT SHAFT KIT PART NUMBERS:

504026 – Input Shaft Kit - Non Pump (shaft p/n 132447)
504027 – Input Shaft Kit - Pump Models (shaft p/n 132446)

• LUBE PUMP, OUTPUT SHAFT SIDE GEARS AND LOOSE PARTS – Listed below are

the balance of the new individual service parts located in the power divider section of the forward
carrier. These parts are related directly to the new design lube pump system. Detailed parts and
illustrations are shown on page 3 of this bulletin.

IM

pump design. Do not to mix these parts. Use pump model output shafts with pump model input shafts as well as non pump
output shaft side gear with non pump input shafts! Mixed parts will assemble together, but they are not designed to run

together and failure will occur if any parts are mixed.

NEW KITS AND LOOSE PART NUMBERS:

504028 – Lube Pump Parts Kit – Pump Models
504029 – Manifold Parts Kit – Pump Models
132061 – Output Side Gear – Pump Models (only sold as kit# 504028)
133964 – Filter Screen Assembly – Pump Models
134010 – Collar Lock – Pump Models
134011 – Lube Hose – Pump Models
132060 – Bearing Cone – Pump and Non Pump Models
132443 – Output Side Gear – Non Pump Models

• SERVICE CARRIERS – The service carriers are completely interchangeable as a unit but the

components inside are not. Knowing the design level being serviced is very important when ordering
replacement parts for any repairs or overhauls. New Service Carrier part numbers have been
released so customers can take advantage of the new design. The old design service carriers will be
phased out. Refer to pages 4-6 of this bulletin for a complete crossover listing of carrier part
numbers.

[Models: DS344, DS404, DS405, DSP40, DSP41, DST40, DST41, DSH40, DSH44]

[Models: DD404, DDP40, DDP41, DDH40, DDH44]

PORTANT NOTE: The output shaft side gears are designed for use with specific input shafts, i.e. pump design vs. non

interchangeable with new design service carriers!

Page 2 of 6